Traction device for dual-tired wheels



Dec. 16, 1924.

' 1,519,834 M. HALLANAN TRAQTION DEVICE FOR DUAL TIRED WHEELS Filed Dec. 7, 1923 p w g If 1 v w b 1/ (H! ,m

L A'ITO NEY Patented Dec. 16, 1924.

UNITED STATES PATENT ()FFICE To all whom it may concern:

Be it known that I, a citizen of the New York city,

of New York, tain new and useful Improvements in Tracfor Dual-Tired which the following is a specification.

My invent-ion tion devices for and it is my object to can be easily and from the wheel, which tires and tires of difand State tion Devices device which plied to and removed will fit new or worn ferent sizes and which a low cost.

In the drawing in section, of my Fig. 2 a plan view 0 TRACTION DEVICE Application filed December 7,

in the In Fig 1 the usual wheel a has dual tires 1) and 0 mounted thereon. My device consists of a center piece 1 adapted to he between the tires 6 an with a rib 2.

on either side t and 4, each provi arranged with rib 2.

Attached to the outside edges of the bear- 4 are fastening devices, chains 6 and 7 being shown. The free ends of these chains carry clamping pieces 8 and ing plates 3 Hinged to this hereof are bearing plates 3 ded with ribs 5 transversely respect to the center piece and 9 and a clamping bolt and engages the other pieces.

In use the device is laid over the tires with the center piece bearing plate on the tread of each tire. The chains are passed bolt inserted and is solidly anchored to the wheel.

United States,

relates to dual titre motor truck wheels Fig. 1 is a view, partly device on a wheel; and

f the face of my deunder drawn up until the device MICHAEL HALLANAN, OF NEW YORK, N. Y.

FOB DUAL-TIRED WHEELS.

1923. Serial No. 679,136.

rality of these MICHAEL HALLANAN, residing at county of New York have invented cerand quickly without are smooth no damage Wheels, of

detachable tracables it to fit new produce an efficient quickly apferent sizes.

solid grip in snow, can be produced at while the rib on reduce skidding.

I claim d a and is provlded center piece piece lie on the treads of tires lie between tires, the center piece on adapted to lie on the 10 passes through one of these clamping between them and a In testimony whereof signature.

the felloe: and the A pluj acki sult from continued use 0 The flexibility of the device, due to the three piece, hinged joint or worn As but three drop forgings the production of the device, center piece, the bearing plates in duplicate and the clamping pieces in duplicate it can be manufactured and sold at a low price.

devices are generally placed on each wheel and this can be done easily ng up the wheel. As the surfaces in contact with the tires to the rubber can ref the device.

construction entires and tires of different sizes while the chain and plate retaining device enables it to fit wheels of dif- The transverse ribs on the plates take a mud or sand a stalled car to pull out under its own power the center piece tends to and enable are used in namely, the

1. A traction device for dual tired wheels comprising a center piece adapted to lie be tween tires in contact therewith and adapted MICHAEL HALLANAN. 

